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发明名称
Frostproof deep well pump arrangement
摘要
申请公布号
US2604168(A)
申请公布日期
1952.07.22
申请号
US19470728312
申请日期
1947.02.13
申请人
ACKEREN PAUL M VAN
发明人
ACKEREN PAUL M. VAN
分类号
F04D15/00
主分类号
F04D15/00
代理机构
代理人
主权项
地址
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